// DRBT changes here

/*
 Copyright (c) 1997, 1998 Carnegie Mellon University.  All Rights
 Reserved. 

 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:

 1. Redistributions of source code must retain the above copyright notice,
 this list of conditions and the following disclaimer.
 2. Redistributions in binary form must reproduce the above copyright notice,
 this list of conditions and the following disclaimer in the documentation
 and/or other materials provided with the distribution.
 3. The name of the author may not be used to endorse or promote products
 derived from this software without specific prior written permission.

 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 The AODV code developed by the CMU/MONARCH group was optimized and tuned by Samir Das and Mahesh Marina, University of Cincinnati. The work was partially done in Sun Microsystems.
 */

#ifndef __aodv_packet_h__
#define __aodv_packet_h__

//#include <config.h>
//#include "aodv.h"
#define AODV_MAX_ERRORS 100

/* =====================================================================
 Packet Formats...
 ===================================================================== */
#define AODVTYPE_HELLO  	0x01
#define AODVTYPE_RREQ   	0x02
#define AODVTYPE_RREP   	0x04
#define AODVTYPE_RERR   	0x08
#define AODVTYPE_RREP_ACK  	0x10

/*
 * AODV Routing Protocol Header Macros
 */
#define HDR_AODV(p)		((struct hdr_aodv*)hdr_aodv::access(p))
#define HDR_AODV_REQUEST(p)  	((struct hdr_aodv_request*)hdr_aodv::access(p))
#define HDR_AODV_REPLY(p)	((struct hdr_aodv_reply*)hdr_aodv::access(p))
#define HDR_AODV_ERROR(p)	((struct hdr_aodv_error*)hdr_aodv::access(p))
#define HDR_AODV_RREP_ACK(p)	((struct hdr_aodv_rrep_ack*)hdr_aodv::access(p))

/*
 * General AODV Header - shared by all formats
 */
struct hdr_aodv {
	u_int8_t ah_type;
	/*
	 u_int8_t        ah_reserved[2];
	 u_int8_t        ah_hopcount;
	 */
	// Header access methods
	static int offset_; // required by PacketHeaderManager
	inline static int& offset() {
		return offset_;
	}
	inline static hdr_aodv* access(const Packet* p) {
		return (hdr_aodv*) p->access(offset_);
	}
};

struct hdr_aodv_request {
	u_int8_t rq_type; // Packet Type
	u_int8_t reserved[2];
	u_int8_t rq_hop_count; // Hop Count
	u_int32_t rq_bcast_id; // Broadcast ID

	nsaddr_t rq_dst; // Destination IP Address
	u_int32_t rq_dst_seqno; // Destination Sequence Number
	nsaddr_t rq_src; // Source IP Address
	u_int32_t rq_src_seqno; // Source Sequence Number

	// 1. DRBT
	/***** sofiane **********/
	float rq_bp; // Debit du flux QoS sinon -1 si BE
	float rq_bplibre; // Bande Passante libre  
	int rq_be_count; // Nombre de flux BE       
	// end 1

	double rq_timestamp; // when REQUEST sent;
	// used to compute route discovery latency

	// This define turns on gratuitous replies- see aodv.cc for implementation contributed by
	// Anant Utgikar, 09/16/02.
	//#define RREQ_GRAT_RREP	0x80

	inline int size() {
		int sz = 0;
		/*
		 sz = sizeof(u_int8_t)		// rq_type
		 + 2*sizeof(u_int8_t) 	// reserved
		 + sizeof(u_int8_t)		// rq_hop_count
		 + sizeof(double)		// rq_timestamp
		 + sizeof(u_int32_t)	// rq_bcast_id
		 + sizeof(nsaddr_t)		// rq_dst
		 + sizeof(u_int32_t)	// rq_dst_seqno
		 + sizeof(nsaddr_t)		// rq_src
		 + sizeof(u_int32_t);	// rq_src_seqno
		 */
		sz = 7*sizeof(u_int32_t);
		assert(sz >= 0);
		return sz;
	}
};

struct hdr_aodv_reply {
	u_int8_t rp_type; // Packet Type
	u_int8_t reserved[2];
	u_int8_t rp_hop_count; // Hop Count
	nsaddr_t rp_dst; // Destination IP Address
	u_int32_t rp_dst_seqno; // Destination Sequence Number
	nsaddr_t rp_src; // Source IP Address
	double rp_lifetime; // Lifetime

	double rp_timestamp; // when corresponding REQ sent;
	// used to compute route discovery latency
	// 2. DRBT	
	//sofiane				
	double rp_bplibre; //Utiliser par la couche MAC
	float rp_bplibre_; //Utiliser par la couche MAC
	int rp_false_RREP; // False RREP
	u_int32_t rp_id_flux; // Id Flux QoS
	double rp_bp;
	int rp_emetteur; // Noeud emetteur du flux QoS
	int rp_be_count; // Nombre de flux BE

	nsaddr_t rp_rq_dest; // Destination RREQ Address
	nsaddr_t rp_rq_source; // Source RREQ Address

	u_int8_t rp_flux_stop; // Flux QoS : ON/OFF
	float rp_bp_flux[10]; // Flux QoS : ON
	int rp_ID_flux[10]; // Flux QoS : ON
	// end 2

	inline int size() {
		int sz = 0;
		/*
		 sz = sizeof(u_int8_t)		// rp_type
		 + 2*sizeof(u_int8_t) 	// rp_flags + reserved
		 + sizeof(u_int8_t)		// rp_hop_count
		 + sizeof(double)		// rp_timestamp
		 + sizeof(nsaddr_t)		// rp_dst
		 + sizeof(u_int32_t)	// rp_dst_seqno
		 + sizeof(nsaddr_t)		// rp_src
		 + sizeof(u_int32_t);	// rp_lifetime
		 */
		sz = 6*sizeof(u_int32_t);
		assert(sz >= 0);
		return sz;
	}

};

struct hdr_aodv_error {
	u_int8_t re_type; // Type
	u_int8_t reserved[2]; // Reserved
	u_int8_t DestCount; // DestCount
	// List of Unreachable destination IP addresses and sequence numbers
	nsaddr_t unreachable_dst[AODV_MAX_ERRORS];
	u_int32_t unreachable_dst_seqno[AODV_MAX_ERRORS];

	inline int size() {
		int sz = 0;
		/*
		 sz = sizeof(u_int8_t)		// type
		 + 2*sizeof(u_int8_t) 	// reserved
		 + sizeof(u_int8_t)		// length
		 + length*sizeof(nsaddr_t); // unreachable destinations
		 */
		sz = (DestCount*2 + 1)*sizeof(u_int32_t);
		assert(sz);
		return sz;
	}

};

struct hdr_aodv_rrep_ack {
	u_int8_t rpack_type;
	u_int8_t reserved;
};

// for size calculation of header-space reservation
union hdr_all_aodv {
	hdr_aodv ah;
	hdr_aodv_request rreq;
	hdr_aodv_reply rrep;
	hdr_aodv_error rerr;
	hdr_aodv_rrep_ack rrep_ack;
};

#endif /* __aodv_packet_h__ */
